﻿namespace MyLifeTime
{
    internal class Program
    {
        static void Main(string[] args)
        {
            DateTime birthday = new DateTime(2002, 11, 09);
            TimeSpan ts = DateTime.Today - birthday;
            int lifeDays = ts.Days;
            Console.WriteLine($"我已经活了{lifeDays}天");
        }
    }
}